/**
 * IosSelect
 * @param {number} level 选择的层级 1 2 3 4 5 6 最多支持6层
 * @param {...Array} data [oneLevelData[, twoLevelData[, threeLevelData[, fourLevelData[, fiveLevelData[, sixLevelData]]]]]] 可以用数组，也可以用方法
 * @param {Object} options
 * @param {string=} options.container 组件插入到该元素下 可选
 * @param {Function} options.callback 选择完毕后的回调函数
 * @param {Function} options.fallback 选择取消后的回调函数
 * @param {Function} options.maskCallback 点击背景层关闭组件时触发的方法
 * @param {string=} options.title 选择框title
 * @param {number=} options.itemHeight 每一项的高度，默认 35
 * @param {number=} options.itemShowCount 组件展示的项数，默认 7，可选3,5,7,9，不过不是3,5,7,9则展示7项
 * @param {number=} options.headerHeight 组件标题栏高度 默认 44
 * @param {css=} options.cssUnit px或者rem 默认是px
 * @param {string=} options.addClassName 组件额外类名 用于自定义样式
 * @param {...Array=} options.relation 数组 [oneTwoRelation, twoThreeRelation, threeFourRelation, fourFiveRelation] 默认值：[0, 0, 0, 0, 0, 0]
 * @param {number=} options.relation.oneTwoRelation 第一列和第二列是否通过parentId关联
 * @param {number=} options.relation.twoThreeRelation 第二列和第三列是否通过parentId关联
 * @param {number=} options.relation.threeFourRelation 第三列和第四列是否通过parentId关联
 * @param {number=} options.relation.fourFiveRelation 第四列和第五列是否通过parentId关联
 * @param {number=} options.relation.fiveSixRelation 第五列和第六列是否通过parentId关联
 * @param {string=} options.oneLevelId 第一级选中id
 * @param {string=} options.twoLevelId 第二级选中id
 * @param {string=} options.threeLevelId 第三级选中id
 * @param {string=} options.fourLevelId 第四级选中id
 * @param {string=} options.fiveLevelId 第五级选中id
 * @param {string=} options.sixLevelId 第六级选中id
 * @param {boolean=} options.showLoading 如果你的数据是异步加载的，可以使用该参数设置为true，下拉菜单会有加载中的效果
 * @param {boolean=} options.showAnimate 是否需要入场动画和退场动画，如需自定义动画效果，请修改css
 */

;(function () {
  /* modify by zhoushengmufc,based on iScroll v5.2.0 */

  var rAF =
    window.requestAnimationFrame ||
    window.webkitRequestAnimationFrame ||
    window.mozRequestAnimationFrame ||
    window.oRequestAnimationFrame ||
    window.msRequestAnimationFrame ||
    function (callback) {
      window.setTimeout(callback, 1000 / 60)
    }

  var utils = (function () {
    var me = {}

    var _elementStyle = document.createElement('div').style
    var _vendor = (function () {
      var vendors = ['t', 'webkitT', 'MozT', 'msT', 'OT'],
        transform,
        i = 0,
        l = vendors.length

      for (; i < l; i++) {
        transform = vendors[i] + 'ransform'
        if (transform in _elementStyle) return vendors[i].substr(0, vendors[i].length - 1)
      }

      return false
    })()

    function _prefixStyle(style) {
      if (_vendor === false) return false
      if (_vendor === '') return style
      return _vendor + style.charAt(0).toUpperCase() + style.substr(1)
    }

    me.getTime =
      Date.now ||
      function getTime() {
        return new Date().getTime()
      }

    me.extend = function (target, obj) {
      for (var i in obj) {
        target[i] = obj[i]
      }
    }

    me.addEvent = function (el, type, fn, capture) {
      el.addEventListener(type, fn, !!capture)
    }

    me.removeEvent = function (el, type, fn, capture) {
      el.removeEventListener(type, fn, !!capture)
    }

    me.prefixPointerEvent = function (pointerEvent) {
      return window.MSPointerEvent
        ? 'MSPointer' + pointerEvent.charAt(7).toUpperCase() + pointerEvent.substr(8)
        : pointerEvent
    }

    me.momentum = function (current, start, time, lowerMargin, wrapperSize, deceleration) {
      var distance = current - start,
        speed = Math.abs(distance) / time,
        destination,
        duration

      deceleration = deceleration === undefined ? 0.0006 : deceleration

      destination = current + ((speed * speed) / (2 * deceleration)) * (distance < 0 ? -1 : 1)
      duration = speed / deceleration

      if (destination < lowerMargin) {
        destination = wrapperSize ? lowerMargin - (wrapperSize / 2.5) * (speed / 8) : lowerMargin
        distance = Math.abs(destination - current)
        duration = distance / speed
      } else if (destination > 0) {
        destination = wrapperSize ? (wrapperSize / 2.5) * (speed / 8) : 0
        distance = Math.abs(current) + destination
        duration = distance / speed
      }

      return {
        destination: Math.round(destination),
        duration: duration,
      }
    }

    var _transform = _prefixStyle('transform')

    me.extend(me, {
      hasTransform: _transform !== false,
      hasPerspective: _prefixStyle('perspective') in _elementStyle,
      hasTouch: 'ontouchstart' in window,
      hasPointer: !!(window.PointerEvent || window.MSPointerEvent), // IE10 is prefixed
      hasTransition: _prefixStyle('transition') in _elementStyle,
    })

    /*
	    This should find all Android browsers lower than build 535.19 (both stock browser and webview)
	    - galaxy S2 is ok
	    - 2.3.6 : `AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1`
	    - 4.0.4 : `AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30`
	   - galaxy S3 is badAndroid (stock brower, webview)
	     `AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30`
	   - galaxy S4 is badAndroid (stock brower, webview)
	     `AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30`
	   - galaxy S5 is OK
	     `AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Mobile Safari/537.36 (Chrome/)`
	   - galaxy S6 is OK
	     `AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Mobile Safari/537.36 (Chrome/)`
	  */
    me.isBadAndroid = (function () {
      var appVersion = window.navigator.appVersion
      // Android browser is not a chrome browser.
      if (/Android/.test(appVersion) && !/Chrome\/\d/.test(appVersion)) {
        var safariVersion = appVersion.match(/Safari\/(\d+.\d)/)
        if (safariVersion && typeof safariVersion === 'object' && safariVersion.length >= 2) {
          return parseFloat(safariVersion[1]) < 535.19
        } else {
          return true
        }
      } else {
        return false
      }
    })()

    me.extend((me.style = {}), {
      transform: _transform,
      transitionTimingFunction: _prefixStyle('transitionTimingFunction'),
      transitionDuration: _prefixStyle('transitionDuration'),
      transitionDelay: _prefixStyle('transitionDelay'),
      transformOrigin: _prefixStyle('transformOrigin'),
    })

    me.hasClass = function (e, c) {
      var re = new RegExp('(^|\\s)' + c + '(\\s|$)')
      return re.test(e.className)
    }

    me.addClass = function (e, c) {
      if (me.hasClass(e, c)) {
        return
      }

      var newclass = e.className.split(' ')
      newclass.push(c)
      e.className = newclass.join(' ')
    }

    me.removeClass = function (e, c) {
      if (!me.hasClass(e, c)) {
        return
      }

      var re = new RegExp('(^|\\s)' + c + '(\\s|$)', 'g')
      e.className = e.className.replace(re, ' ')
    }

    me.offset = function (el) {
      var left = -el.offsetLeft,
        top = -el.offsetTop

      // jshint -W084
      while ((el = el.offsetParent)) {
        left -= el.offsetLeft
        top -= el.offsetTop
      }
      // jshint +W084

      return {
        left: left,
        top: top,
      }
    }

    me.preventDefaultException = function (el, exceptions) {
      for (var i in exceptions) {
        if (exceptions[i].test(el[i])) {
          return true
        }
      }

      return false
    }

    me.extend((me.eventType = {}), {
      touchstart: 1,
      touchmove: 1,
      touchend: 1,

      mousedown: 2,
      mousemove: 2,
      mouseup: 2,

      pointerdown: 3,
      pointermove: 3,
      pointerup: 3,

      MSPointerDown: 3,
      MSPointerMove: 3,
      MSPointerUp: 3,
    })

    me.extend((me.ease = {}), {
      quadratic: {
        style: 'cubic-bezier(0.25, 0.46, 0.45, 0.94)',
        fn: function (k) {
          return k * (2 - k)
        },
      },
      circular: {
        style: 'cubic-bezier(0.1, 0.57, 0.1, 1)', // Not properly "circular" but this looks better, it should be (0.075, 0.82, 0.165, 1)
        fn: function (k) {
          return Math.sqrt(1 - --k * k)
        },
      },
      back: {
        style: 'cubic-bezier(0.175, 0.885, 0.32, 1.275)',
        fn: function (k) {
          var b = 4
          return (k = k - 1) * k * ((b + 1) * k + b) + 1
        },
      },
      bounce: {
        style: '',
        fn: function (k) {
          if ((k /= 1) < 1 / 2.75) {
            return 7.5625 * k * k
          } else if (k < 2 / 2.75) {
            return 7.5625 * (k -= 1.5 / 2.75) * k + 0.75
          } else if (k < 2.5 / 2.75) {
            return 7.5625 * (k -= 2.25 / 2.75) * k + 0.9375
          } else {
            return 7.5625 * (k -= 2.625 / 2.75) * k + 0.984375
          }
        },
      },
      elastic: {
        style: '',
        fn: function (k) {
          var f = 0.22,
            e = 0.4

          if (k === 0) {
            return 0
          }
          if (k == 1) {
            return 1
          }

          return e * Math.pow(2, -10 * k) * Math.sin(((k - f / 4) * (2 * Math.PI)) / f) + 1
        },
      },
    })

    me.tap = function (e, eventName) {
      var ev = document.createEvent('Event')
      ev.initEvent(eventName, true, true)
      ev.pageX = e.pageX
      ev.pageY = e.pageY
      e.target.dispatchEvent(ev)
    }

    me.click = function (e) {
      var target = e.target,
        ev

      if (!/(SELECT|INPUT|TEXTAREA)/i.test(target.tagName)) {
        // https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/initMouseEvent
        // initMouseEvent is deprecated.
        ev = document.createEvent(window.MouseEvent ? 'MouseEvents' : 'Event')
        ev.initEvent('click', true, true)
        ev.view = e.view || window
        ev.detail = 1
        ev.screenX = target.screenX || 0
        ev.screenY = target.screenY || 0
        ev.clientX = target.clientX || 0
        ev.clientY = target.clientY || 0
        ev.ctrlKey = !!e.ctrlKey
        ev.altKey = !!e.altKey
        ev.shiftKey = !!e.shiftKey
        ev.metaKey = !!e.metaKey
        ev.button = 0
        ev.relatedTarget = null
        ev._constructed = true
        target.dispatchEvent(ev)
      }
    }

    return me
  })()
  function IScrollForIosSelect(el, options) {
    this.wrapper = typeof el == 'string' ? document.querySelector(el) : el
    this.scroller = this.wrapper.children[0]
    this.scrollerStyle = this.scroller.style // cache style for better performance

    this.options = {
      disablePointer: true,
      disableTouch: !utils.hasTouch,
      disableMouse: utils.hasTouch,
      startX: 0,
      startY: 0,
      scrollY: true,
      directionLockThreshold: 5,
      momentum: true,

      bounce: true,
      bounceTime: 600,
      bounceEasing: '',

      preventDefault: true,
      preventDefaultException: { tagName: /^(INPUT|TEXTAREA|BUTTON|SELECT)$/ },

      HWCompositing: true,
      useTransition: true,
      useTransform: true,
      bindToWrapper: typeof window.onmousedown === 'undefined',
    }

    for (var i in options) {
      this.options[i] = options[i]
    }

    // Normalize options
    this.translateZ = this.options.HWCompositing && utils.hasPerspective ? ' translateZ(0)' : ''

    this.options.useTransition = utils.hasTransition && this.options.useTransition
    this.options.useTransform = utils.hasTransform && this.options.useTransform

    this.options.eventPassthrough =
      this.options.eventPassthrough === true ? 'vertical' : this.options.eventPassthrough
    this.options.preventDefault = !this.options.eventPassthrough && this.options.preventDefault

    // If you want eventPassthrough I have to lock one of the axes
    this.options.scrollY =
      this.options.eventPassthrough == 'vertical' ? false : this.options.scrollY
    this.options.scrollX =
      this.options.eventPassthrough == 'horizontal' ? false : this.options.scrollX

    // With eventPassthrough we also need lockDirection mechanism
    this.options.freeScroll = this.options.freeScroll && !this.options.eventPassthrough
    this.options.directionLockThreshold = this.options.eventPassthrough
      ? 0
      : this.options.directionLockThreshold

    this.options.bounceEasing =
      typeof this.options.bounceEasing == 'string'
        ? utils.ease[this.options.bounceEasing] || utils.ease.circular
        : this.options.bounceEasing

    this.options.resizePolling =
      this.options.resizePolling === undefined ? 60 : this.options.resizePolling

    if (this.options.tap === true) {
      this.options.tap = 'tap'
    }

    // https://github.com/cubiq/iscrollForIosSelect/issues/1029
    if (!this.options.useTransition && !this.options.useTransform) {
      if (!/relative|absolute/i.test(this.scrollerStyle.position)) {
        this.scrollerStyle.position = 'relative'
      }
    }

    if (this.options.shrinkScrollbars == 'scale') {
      this.options.useTransition = false
    }

    this.options.invertWheelDirection = this.options.invertWheelDirection ? -1 : 1

    if (this.options.probeType == 3) {
      this.options.useTransition = false
    }
    this.x = 0
    this.y = 0
    this.directionX = 0
    this.directionY = 0
    this._events = {}
    this._init()
    this.refresh()

    this.scrollTo(this.options.startX, this.options.startY)
    this.enable()
  }

  IScrollForIosSelect.prototype = {
    version: '1.0.0',

    _init: function () {
      this._initEvents()
    },

    destroy: function () {
      this._initEvents(true)
      clearTimeout(this.resizeTimeout)
      this.resizeTimeout = null
      this._execEvent('destroy')
    },

    _transitionEnd: function (e) {
      if (e.target != this.scroller || !this.isInTransition) {
        return
      }

      this._transitionTime()
      if (!this.resetPosition(this.options.bounceTime)) {
        this.isInTransition = false
        this._execEvent('scrollEnd')
      }
    },

    _start: function (e) {
      // React to left mouse button only
      if (utils.eventType[e.type] != 1) {
        // for button property
        // http://unixpapa.com/js/mouse.html
        var button
        if (!e.which) {
          /* IE case */
          button = e.button < 2 ? 0 : e.button == 4 ? 1 : 2
        } else {
          /* All others */
          button = e.button
        }
        if (button !== 0) {
          return
        }
      }

      if (!this.enabled || (this.initiated && utils.eventType[e.type] !== this.initiated)) {
        return
      }

      if (
        this.options.preventDefault &&
        !utils.isBadAndroid &&
        !utils.preventDefaultException(e.target, this.options.preventDefaultException)
      ) {
        e.preventDefault()
      }

      var point = e.touches ? e.touches[0] : e,
        pos

      this.initiated = utils.eventType[e.type]
      this.moved = false
      this.distX = 0
      this.distY = 0
      this.directionX = 0
      this.directionY = 0
      this.directionLocked = 0

      this.startTime = utils.getTime()

      if (this.options.useTransition && this.isInTransition) {
        this._transitionTime()
        this.isInTransition = false
        pos = this.getComputedPosition()
        this._translate(Math.round(pos.x), Math.round(pos.y))
        this._execEvent('scrollEnd')
      } else if (!this.options.useTransition && this.isAnimating) {
        this.isAnimating = false
        this._execEvent('scrollEnd')
      }

      this.startX = this.x
      this.startY = this.y
      this.absStartX = this.x
      this.absStartY = this.y
      this.pointX = point.pageX
      this.pointY = point.pageY

      this._execEvent('beforeScrollStart')
    },

    _move: function (e) {
      if (!this.enabled || utils.eventType[e.type] !== this.initiated) {
        return
      }

      if (this.options.preventDefault) {
        // increases performance on Android? TODO: check!
        // e.preventDefault();
      }

      var point = e.touches ? e.touches[0] : e,
        deltaX = point.pageX - this.pointX,
        deltaY = point.pageY - this.pointY,
        timestamp = utils.getTime(),
        newX,
        newY,
        absDistX,
        absDistY

      this.pointX = point.pageX
      this.pointY = point.pageY

      this.distX += deltaX
      this.distY += deltaY
      absDistX = Math.abs(this.distX)
      absDistY = Math.abs(this.distY)

      // We need to move at least 10 pixels for the scrolling to initiate
      if (timestamp - this.endTime > 300 && absDistX < 10 && absDistY < 10) {
        return
      }

      // If you are scrolling in one direction lock the other
      if (!this.directionLocked && !this.options.freeScroll) {
        if (absDistX > absDistY + this.options.directionLockThreshold) {
          this.directionLocked = 'h' // lock horizontally
        } else if (absDistY >= absDistX + this.options.directionLockThreshold) {
          this.directionLocked = 'v' // lock vertically
        } else {
          this.directionLocked = 'n' // no lock
        }
      }

      if (this.directionLocked == 'h') {
        if (this.options.eventPassthrough == 'vertical') {
          e.preventDefault()
        } else if (this.options.eventPassthrough == 'horizontal') {
          this.initiated = false
          return
        }

        deltaY = 0
      } else if (this.directionLocked == 'v') {
        if (this.options.eventPassthrough == 'horizontal') {
          e.preventDefault()
        } else if (this.options.eventPassthrough == 'vertical') {
          this.initiated = false
          return
        }

        deltaX = 0
      }

      deltaX = this.hasHorizontalScroll ? deltaX : 0
      deltaY = this.hasVerticalScroll ? deltaY : 0

      newX = this.x + deltaX
      newY = this.y + deltaY

      // Slow down if outside of the boundaries
      if (newX > 0 || newX < this.maxScrollX) {
        newX = this.options.bounce ? this.x + deltaX / 3 : newX > 0 ? 0 : this.maxScrollX
      }
      if (newY > 0 || newY < this.maxScrollY) {
        newY = this.options.bounce ? this.y + deltaY / 3 : newY > 0 ? 0 : this.maxScrollY
      }

      this.directionX = deltaX > 0 ? -1 : deltaX < 0 ? 1 : 0
      this.directionY = deltaY > 0 ? -1 : deltaY < 0 ? 1 : 0

      if (!this.moved) {
        this._execEvent('scrollStart')
      }

      this.moved = true

      this._translate(newX, newY)
      if (timestamp - this.startTime > 300) {
        this.startTime = timestamp
        this.startX = this.x
        this.startY = this.y

        if (this.options.probeType == 1) {
          this._execEvent('scroll')
        }
      }

      if (this.options.probeType > 1) {
        this._execEvent('scroll')
      }
    },

    _end: function (e) {
      if (!this.enabled || utils.eventType[e.type] !== this.initiated) {
        return
      }

      if (
        this.options.preventDefault &&
        !utils.preventDefaultException(e.target, this.options.preventDefaultException)
      ) {
        e.preventDefault()
      }

      var point = e.changedTouches ? e.changedTouches[0] : e,
        momentumX,
        momentumY,
        duration = utils.getTime() - this.startTime,
        newX = Math.round(this.x),
        newY = Math.round(this.y),
        distanceX = Math.abs(newX - this.startX),
        distanceY = Math.abs(newY - this.startY),
        time = 0,
        easing = ''

      this.isInTransition = 0
      this.initiated = 0
      this.endTime = utils.getTime()

      // reset if we are outside of the boundaries
      if (this.resetPosition(this.options.bounceTime)) {
        return
      }

      this.scrollTo(newX, newY) // ensures that the last position is rounded

      // we scrolled less than 10 pixels
      if (!this.moved) {
        if (this.options.tap) {
          utils.tap(e, this.options.tap)
        }

        if (this.options.click) {
          utils.click(e)
        }

        this._execEvent('scrollCancel')
        return
      }

      if (this._events.flick && duration < 200 && distanceX < 100 && distanceY < 100) {
        this._execEvent('flick')
        return
      }

      // start momentum animation if needed
      if (this.options.momentum && duration < 300) {
        momentumX = this.hasHorizontalScroll
          ? utils.momentum(
              this.x,
              this.startX,
              duration,
              this.maxScrollX,
              this.options.bounce ? this.wrapperWidth : 0,
              this.options.deceleration
            )
          : { destination: newX, duration: 0 }
        momentumY = this.hasVerticalScroll
          ? utils.momentum(
              this.y,
              this.startY,
              duration,
              this.maxScrollY,
              this.options.bounce ? this.wrapperHeight : 0,
              this.options.deceleration
            )
          : { destination: newY, duration: 0 }
        newX = momentumX.destination
        newY = momentumY.destination
        time = Math.max(momentumX.duration, momentumY.duration)
        this.isInTransition = 1
      }

      if (this.options.snap) {
        var snap = this._nearestSnap(newX, newY)
        this.currentPage = snap
        time =
          this.options.snapSpeed ||
          Math.max(
            Math.max(
              Math.min(Math.abs(newX - snap.x), 1000),
              Math.min(Math.abs(newY - snap.y), 1000)
            ),
            300
          )
        newX = snap.x
        newY = snap.y

        this.directionX = 0
        this.directionY = 0
        easing = this.options.bounceEasing
      }

      if (newX != this.x || newY != this.y) {
        // change easing function when scroller goes out of the boundaries
        if (newX > 0 || newX < this.maxScrollX || newY > 0 || newY < this.maxScrollY) {
          easing = utils.ease.quadratic
        }

        this.scrollTo(newX, newY, time, easing)
        return
      }

      this._execEvent('scrollEnd')
    },

    _resize: function () {
      var that = this

      clearTimeout(this.resizeTimeout)

      this.resizeTimeout = setTimeout(function () {
        that.refresh()
      }, this.options.resizePolling)
    },

    resetPosition: function (time) {
      var x = this.x,
        y = this.y

      time = time || 0

      if (!this.hasHorizontalScroll || this.x > 0) {
        x = 0
      } else if (this.x < this.maxScrollX) {
        x = this.maxScrollX
      }

      if (!this.hasVerticalScroll || this.y > 0) {
        y = 0
      } else if (this.y < this.maxScrollY) {
        y = this.maxScrollY
      }

      if (x == this.x && y == this.y) {
        return false
      }

      this.scrollTo(x, y, time, this.options.bounceEasing)

      return true
    },

    disable: function () {
      this.enabled = false
    },

    enable: function () {
      this.enabled = true
    },

    refresh: function () {
      var rf = this.wrapper.offsetHeight // Force reflow

      this.wrapperWidth = this.wrapper.clientWidth
      this.wrapperHeight = this.wrapper.clientHeight

      this.scrollerWidth = this.scroller.offsetWidth
      this.scrollerHeight = this.scroller.offsetHeight

      this.maxScrollX = this.wrapperWidth - this.scrollerWidth
      this.maxScrollY = this.wrapperHeight - this.scrollerHeight

      this.hasHorizontalScroll = this.options.scrollX && this.maxScrollX < 0
      this.hasVerticalScroll = this.options.scrollY && this.maxScrollY < 0

      if (!this.hasHorizontalScroll) {
        this.maxScrollX = 0
        this.scrollerWidth = this.wrapperWidth
      }

      if (!this.hasVerticalScroll) {
        this.maxScrollY = 0
        this.scrollerHeight = this.wrapperHeight
      }

      this.endTime = 0
      this.directionX = 0
      this.directionY = 0

      this.wrapperOffset = utils.offset(this.wrapper)

      this._execEvent('refresh')

      this.resetPosition()
    },

    on: function (type, fn) {
      if (!this._events[type]) {
        this._events[type] = []
      }

      this._events[type].push(fn)
    },

    off: function (type, fn) {
      if (!this._events[type]) {
        return
      }

      var index = this._events[type].indexOf(fn)

      if (index > -1) {
        this._events[type].splice(index, 1)
      }
    },

    _execEvent: function (type) {
      if (!this._events[type]) {
        return
      }

      var i = 0,
        l = this._events[type].length

      if (!l) {
        return
      }

      for (; i < l; i++) {
        this._events[type][i].apply(this, [].slice.call(arguments, 1))
      }
    },

    scrollTo: function (x, y, time, easing) {
      easing = easing || utils.ease.circular

      this.isInTransition = this.options.useTransition && time > 0
      var transitionType = this.options.useTransition && easing.style
      if (!time || transitionType) {
        if (transitionType) {
          this._transitionTimingFunction(easing.style)
          this._transitionTime(time)
        }
        this._translate(x, y)
      } else {
        this._animate(x, y, time, easing.fn)
      }
    },

    scrollToElement: function (el, time, offsetX, offsetY, easing) {
      el = el.nodeType ? el : this.scroller.querySelector(el)

      if (!el) {
        return
      }

      var pos = utils.offset(el)

      pos.left -= this.wrapperOffset.left
      pos.top -= this.wrapperOffset.top

      // if offsetX/Y are true we center the element to the screen
      if (offsetX === true) {
        offsetX = Math.round(el.offsetWidth / 2 - this.wrapper.offsetWidth / 2)
      }
      if (offsetY === true) {
        offsetY = Math.round(el.offsetHeight / 2 - this.wrapper.offsetHeight / 2)
      }

      pos.left -= offsetX || 0
      pos.top -= offsetY || 0

      pos.left = pos.left > 0 ? 0 : pos.left < this.maxScrollX ? this.maxScrollX : pos.left
      pos.top = pos.top > 0 ? 0 : pos.top < this.maxScrollY ? this.maxScrollY : pos.top

      time =
        time === undefined || time === null || time === 'auto'
          ? Math.max(Math.abs(this.x - pos.left), Math.abs(this.y - pos.top))
          : time

      this.scrollTo(pos.left, pos.top, time, easing)
    },

    _transitionTime: function (time) {
      if (!this.options.useTransition) {
        return
      }
      time = time || 0
      var durationProp = utils.style.transitionDuration
      if (!durationProp) {
        return
      }

      this.scrollerStyle[durationProp] = time + 'ms'

      if (!time && utils.isBadAndroid) {
        this.scrollerStyle[durationProp] = '0.0001ms'
        // remove 0.0001ms
        var self = this
        rAF(function () {
          if (self.scrollerStyle[durationProp] === '0.0001ms') {
            self.scrollerStyle[durationProp] = '0s'
          }
        })
      }
    },

    _transitionTimingFunction: function (easing) {
      this.scrollerStyle[utils.style.transitionTimingFunction] = easing
    },

    _translate: function (x, y) {
      if (this.options.useTransform) {
        this.scrollerStyle[utils.style.transform] =
          'translate(' + x + 'px,' + y + 'px)' + this.translateZ
      } else {
        x = Math.round(x)
        y = Math.round(y)
        this.scrollerStyle.left = x + 'px'
        this.scrollerStyle.top = y + 'px'
      }

      this.x = x
      this.y = y
    },

    _initEvents: function (remove) {
      var eventType = remove ? utils.removeEvent : utils.addEvent,
        target = this.options.bindToWrapper ? this.wrapper : window

      eventType(window, 'orientationchange', this)
      eventType(window, 'resize', this)

      if (this.options.click) {
        eventType(this.wrapper, 'click', this, true)
      }

      if (!this.options.disableMouse) {
        eventType(this.wrapper, 'mousedown', this)
        eventType(target, 'mousemove', this)
        eventType(target, 'mousecancel', this)
        eventType(target, 'mouseup', this)
      }

      if (utils.hasPointer && !this.options.disablePointer) {
        eventType(this.wrapper, utils.prefixPointerEvent('pointerdown'), this)
        eventType(target, utils.prefixPointerEvent('pointermove'), this)
        eventType(target, utils.prefixPointerEvent('pointercancel'), this)
        eventType(target, utils.prefixPointerEvent('pointerup'), this)
      }

      if (utils.hasTouch && !this.options.disableTouch) {
        eventType(this.wrapper, 'touchstart', this)
        eventType(target, 'touchmove', this)
        eventType(target, 'touchcancel', this)
        eventType(target, 'touchend', this)
      }

      eventType(this.scroller, 'transitionend', this)
      eventType(this.scroller, 'webkitTransitionEnd', this)
      eventType(this.scroller, 'oTransitionEnd', this)
      eventType(this.scroller, 'MSTransitionEnd', this)
    },

    getComputedPosition: function () {
      var matrix = window.getComputedStyle(this.scroller, null),
        x,
        y

      if (this.options.useTransform) {
        matrix = matrix[utils.style.transform].split(')')[0].split(', ')
        x = +(matrix[12] || matrix[4])
        y = +(matrix[13] || matrix[5])
      } else {
        x = +matrix.left.replace(/[^-\d.]/g, '')
        y = +matrix.top.replace(/[^-\d.]/g, '')
      }

      return { x: x, y: y }
    },

    _animate: function (destX, destY, duration, easingFn) {
      var that = this,
        startX = this.x,
        startY = this.y,
        startTime = utils.getTime(),
        destTime = startTime + duration

      function step() {
        var now = utils.getTime(),
          newX,
          newY,
          easing

        if (now >= destTime) {
          that.isAnimating = false
          that._translate(destX, destY)

          if (!that.resetPosition(that.options.bounceTime)) {
            that._execEvent('scrollEnd')
          }

          return
        }

        now = (now - startTime) / duration
        easing = easingFn(now)
        newX = (destX - startX) * easing + startX
        newY = (destY - startY) * easing + startY
        that._translate(newX, newY)

        if (that.isAnimating) {
          rAF(step)
        }

        if (that.options.probeType == 3) {
          that._execEvent('scroll')
        }
      }

      this.isAnimating = true
      step()
    },

    handleEvent: function (e) {
      switch (e.type) {
        case 'touchstart':
        case 'pointerdown':
        case 'MSPointerDown':
        case 'mousedown':
          this._start(e)
          break
        case 'touchmove':
        case 'pointermove':
        case 'MSPointerMove':
        case 'mousemove':
          this._move(e)
          break
        case 'touchend':
        case 'pointerup':
        case 'MSPointerUp':
        case 'mouseup':
        case 'touchcancel':
        case 'pointercancel':
        case 'MSPointerCancel':
        case 'mousecancel':
          this._end(e)
          break
        case 'orientationchange':
        case 'resize':
          this._resize()
          break
        case 'transitionend':
        case 'webkitTransitionEnd':
        case 'oTransitionEnd':
        case 'MSTransitionEnd':
          this._transitionEnd(e)
          break
        case 'click':
          if (this.enabled && !e._constructed) {
            e.preventDefault()
            e.stopPropagation()
          }
          break
      }
    },
  }
  IScrollForIosSelect.utils = utils

  var iosSelectUtil = {
    isArray: function (arg1) {
      return Object.prototype.toString.call(arg1) === '[object Array]'
    },
    isFunction: function (arg1) {
      return typeof arg1 === 'function'
    },
    attrToData: function (dom, index) {
      var obj = {}
      for (var p in dom.dataset) {
        obj[p] = dom.dataset[p]
      }
      obj['dom'] = dom
      obj['atindex'] = index
      return obj
    },
    attrToHtml: function (obj) {
      var html = ''
      for (var p in obj) {
        html += 'data-' + p + '="' + obj[p] + '"'
      }
      return html
    },
  }
  /*function preventEventFun(e) {
		e.preventDefault();
	}*/
  // Layer
  function Layer(html, opts) {
    if (!(this instanceof Layer)) {
      return new Layer(html, opts)
    }
    this.html = html
    this.opts = opts
    var el = document.createElement('div')
    el.className = 'olay'
    var layer_el = document.createElement('div')
    layer_el.className = 'layer'
    this.el = el
    this.layer_el = layer_el
    this.init()
  }
  Layer.prototype = {
    init: function () {
      this.layer_el.innerHTML = this.html
      if (this.opts.container && document.querySelector(this.opts.container)) {
        document.querySelector(this.opts.container).appendChild(this.el)
      } else {
        document.body.appendChild(this.el)
      }
      this.el.appendChild(this.layer_el)
      this.el.style.height = Math.max(
        document.documentElement.getBoundingClientRect().height,
        window.innerHeight
      )
      if (this.opts.className) {
        this.el.className += ' ' + this.opts.className
      }
      this.bindEvent()
    },
    bindEvent: function () {
      var sureDom = this.el.querySelectorAll('.sure')
      var closeDom = this.el.querySelectorAll('.close')
      var self = this
      this.el.addEventListener('click', function (e) {
        self.close()
        self.opts.maskCallback && self.opts.maskCallback()
      })
      this.layer_el.addEventListener('click', function (e) {
        e.stopPropagation()
      })
      Array.prototype.slice.call(sureDom).forEach(function (item, index) {
        item.addEventListener('click', function () {
          self.close()
        })
      })
      Array.prototype.slice.call(closeDom).forEach(function (item, index) {
        item.addEventListener('click', function () {
          self.close()
          self.opts.fallback && self.opts.fallback()
        })
      })
    },
    close: function () {
      var self = this
      if (self.el) {
        if (self.opts.showAnimate) {
          self.el.className += ' fadeOutDown'
          setTimeout(function () {
            self.removeDom()
          }, 500)
        } else {
          self.removeDom()
        }
      }
    },
    removeDom: function () {
      this.el.parentNode.removeChild(this.el)
      this.el = null
      if (document.documentElement.classList.contains('ios-select-body-class')) {
        document.documentElement.classList.remove('ios-select-body-class')
        /*document.body.removeEventListener('touchmove', preventEventFun, {
					passive: false
				});*/
      }
    },
  }
  function IosSelect(level, data, options) {
    if (!iosSelectUtil.isArray(data) || data.length === 0) {
      throw new TypeError('the data must be a non-empty array!')
      return
    }
    if ([1, 2, 3, 4, 5, 6].indexOf(level) == -1) {
      throw new RangeError('the level parameter must be one of 1,2,3,4,5,6!')
      return
    }
    this.data = data
    this.level = level || 1
    this.options = options
    this.typeBox = 'one-level-box'
    if (this.level === 1) {
      this.typeBox = 'one-level-box'
    } else if (this.level === 2) {
      this.typeBox = 'two-level-box'
    } else if (this.level === 3) {
      this.typeBox = 'three-level-box'
    } else if (this.level === 4) {
      this.typeBox = 'four-level-box'
    } else if (this.level === 5) {
      this.typeBox = 'five-level-box'
    } else if (this.level === 6) {
      this.typeBox = 'six-level-box'
    }
    this.title = options.title || ''
    this.options.itemHeight = options.itemHeight || 35
    this.options.itemShowCount =
      [3, 5, 7, 9].indexOf(options.itemShowCount) !== -1 ? options.itemShowCount : 7
    this.options.coverArea1Top = Math.floor(this.options.itemShowCount / 2)
    this.options.coverArea2Top = Math.ceil(this.options.itemShowCount / 2)
    this.options.headerHeight = options.headerHeight || 44
    this.options.relation = iosSelectUtil.isArray(this.options.relation)
      ? this.options.relation
      : []
    this.options.oneTwoRelation = this.options.relation[0]
    this.options.twoThreeRelation = this.options.relation[1]
    this.options.threeFourRelation = this.options.relation[2]
    this.options.fourFiveRelation = this.options.relation[3]
    this.options.fiveSixRelation = this.options.relation[4]
    if (this.options.cssUnit !== 'px' && this.options.cssUnit !== 'rem') {
      this.options.cssUnit = 'px'
    }
    var self = this
    // 选中元素的信息
    this.selectOneObj = {
      id: self.options.oneLevelId,
    }
    this.selectTwoObj = {
      id: self.options.twoLevelId,
    }
    this.selectThreeObj = {
      id: self.options.threeLevelId,
    }
    this.selectFourObj = {
      id: self.options.fourLevelId,
    }
    this.selectFiveObj = {
      id: self.options.fiveLevelId,
    }
    this.selectSixObj = {
      id: self.options.sixLevelId,
    }
    this.setBase()
    this.init()
  }

  IosSelect.prototype = {
    init: function () {
      this.initLayer()
      this.setLevelData(
        1,
        this.options.oneLevelId,
        this.options.twoLevelId,
        this.options.threeLevelId,
        this.options.fourLevelId,
        this.options.fiveLevelId,
        this.options.sixLevelId
      )
    },
    initLayer: function () {
      var self = this
      var sureText = this.options.sureText || '确定'
      var closeText = this.options.closeText || '取消'
      var headerHeightCss = this.options.headerHeight + this.options.cssUnit
      var all_html = [
        '<header style="height: ' +
          headerHeightCss +
          '; line-height: ' +
          headerHeightCss +
          '" class="iosselect-header">',
        '<a style="height: ' +
          headerHeightCss +
          '; line-height: ' +
          headerHeightCss +
          '" href="javascript:void(0)" class="close">' +
          closeText +
          '</a>',
        '<a style="height: ' +
          headerHeightCss +
          '; line-height: ' +
          headerHeightCss +
          '" href="javascript:void(0)" class="sure">' +
          sureText +
          '</a>',
        '<h2 id="iosSelectTitle"></h2>',
        '</header>',
        '<section class="iosselect-box">',
        '<div class="one-level-contain" id="oneLevelContain">',
        '<ul class="select-one-level">',
        '</ul>',
        '</div>',
        '<div class="two-level-contain" id="twoLevelContain">',
        '<ul class="select-two-level">',
        '</ul>',
        '</div>',
        '<div class="three-level-contain" id="threeLevelContain">',
        '<ul class="select-three-level">',
        '</ul>',
        '</div>',
        '<div class="four-level-contain" id="fourLevelContain">',
        '<ul class="select-four-level">',
        '</ul>',
        '</div>',
        '<div class="five-level-contain" id="fiveLevelContain">',
        '<ul class="select-five-level">',
        '</ul>',
        '</div>',
        '<div class="six-level-contain" id="sixLevelContain">',
        '<ul class="select-six-level">',
        '</ul>',
        '</div>',
        '</section>',
        '<hr class="cover-area1"/>',
        '<hr class="cover-area2"/>',
        '<div class="ios-select-loading-box" id="iosSelectLoadingBox">',
        '<div class="ios-select-loading"></div>',
        '</div>',
      ].join('\r\n')
      this.iosSelectLayer = new Layer(all_html, {
        className:
          'ios-select-widget-box ' +
          this.typeBox +
          (this.options.addClassName ? ' ' + this.options.addClassName : '') +
          (this.options.showAnimate ? ' fadeInUp' : ''),
        container: this.options.container || '',
        showAnimate: this.options.showAnimate,
        fallback: this.options.fallback,
        maskCallback: this.options.maskCallback,
      })

      this.iosSelectTitleDom = this.iosSelectLayer.el.querySelector('#iosSelectTitle')
      this.iosSelectLoadingBoxDom = this.iosSelectLayer.el.querySelector('#iosSelectLoadingBox')
      this.iosSelectTitleDom.innerHTML = this.title
      if (this.options.headerHeight && this.options.itemHeight) {
        this.coverArea1Dom = this.iosSelectLayer.el.querySelector('.cover-area1')
        this.coverArea1Dom.style.top =
          this.options.headerHeight +
          this.options.itemHeight * this.options.coverArea1Top +
          this.options.cssUnit
        this.coverArea2Dom = this.iosSelectLayer.el.querySelector('.cover-area2')
        this.coverArea2Dom.style.top =
          this.options.headerHeight +
          this.options.itemHeight * this.options.coverArea2Top +
          this.options.cssUnit
      }

      this.oneLevelContainDom = this.iosSelectLayer.el.querySelector('#oneLevelContain')
      this.twoLevelContainDom = this.iosSelectLayer.el.querySelector('#twoLevelContain')
      this.threeLevelContainDom = this.iosSelectLayer.el.querySelector('#threeLevelContain')
      this.fourLevelContainDom = this.iosSelectLayer.el.querySelector('#fourLevelContain')
      this.fiveLevelContainDom = this.iosSelectLayer.el.querySelector('#fiveLevelContain')
      this.sixLevelContainDom = this.iosSelectLayer.el.querySelector('#sixLevelContain')

      this.oneLevelUlContainDom = this.iosSelectLayer.el.querySelector('.select-one-level')
      this.twoLevelUlContainDom = this.iosSelectLayer.el.querySelector('.select-two-level')
      this.threeLevelUlContainDom = this.iosSelectLayer.el.querySelector('.select-three-level')
      this.fourLevelUlContainDom = this.iosSelectLayer.el.querySelector('.select-four-level')
      this.fiveLevelUlContainDom = this.iosSelectLayer.el.querySelector('.select-five-level')
      this.sixLevelUlContainDom = this.iosSelectLayer.el.querySelector('.select-six-level')

      this.iosSelectLayer.el.querySelector('.layer').style.height =
        this.options.itemHeight * this.options.itemShowCount +
        this.options.headerHeight +
        this.options.cssUnit

      this.oneLevelContainDom.style.height =
        this.options.itemHeight * this.options.itemShowCount + this.options.cssUnit
      document.documentElement.classList.add('ios-select-body-class')
      /*document.body.addEventListener('touchmove', preventEventFun, {
				passive: false
			});*/

      this.scrollOne = new IScrollForIosSelect('#oneLevelContain', {
        probeType: 3,
        bounce: false,
      })
      this.setScorllEvent(this.scrollOne, 1)

      if (this.level >= 2) {
        this.twoLevelContainDom.style.height =
          this.options.itemHeight * this.options.itemShowCount + this.options.cssUnit
        this.scrollTwo = new IScrollForIosSelect('#twoLevelContain', {
          probeType: 3,
          bounce: false,
        })
        this.setScorllEvent(this.scrollTwo, 2)
      }
      if (this.level >= 3) {
        this.threeLevelContainDom.style.height =
          this.options.itemHeight * this.options.itemShowCount + this.options.cssUnit
        this.scrollThree = new IScrollForIosSelect('#threeLevelContain', {
          probeType: 3,
          bounce: false,
        })
        this.setScorllEvent(this.scrollThree, 3)
      }
      if (this.level >= 4) {
        this.fourLevelContainDom.style.height =
          this.options.itemHeight * this.options.itemShowCount + this.options.cssUnit
        this.scrollFour = new IScrollForIosSelect('#fourLevelContain', {
          probeType: 3,
          bounce: false,
        })
        this.setScorllEvent(this.scrollFour, 4)
      }
      if (this.level >= 5) {
        this.fiveLevelContainDom.style.height =
          this.options.itemHeight * this.options.itemShowCount + this.options.cssUnit
        this.scrollFive = new IScrollForIosSelect('#fiveLevelContain', {
          probeType: 3,
          bounce: false,
        })
        this.setScorllEvent(this.scrollFive, 5)
      }
      if (this.level >= 6) {
        this.sixLevelContainDom.style.height =
          this.options.itemHeight * this.options.itemShowCount + this.options.cssUnit
        this.scrollSix = new IScrollForIosSelect('#sixLevelContain', {
          probeType: 3,
          bounce: false,
        })
        this.setScorllEvent(this.scrollSix, 6)
      }

      // 确认
      this.selectBtnDom = this.iosSelectLayer.el.querySelector('.sure')
      this.selectBtnDom.addEventListener('click', function (e) {
        self.options.callback &&
          self.options.callback(
            self.selectOneObj,
            self.selectTwoObj,
            self.selectThreeObj,
            self.selectFourObj,
            self.selectFiveObj,
            self.selectSixObj
          )
      })
    },
    mapKeyByIndex: function (index) {
      var self = this
      var map = {
        index: 1,
        levelContain: self.oneLevelContainDom,
        relation: self.options.oneTwoRelation,
      }
      if (index === 2) {
        map = {
          index: 2,
          levelContain: self.twoLevelContainDom,
          relation: self.options.twoThreeRelation,
        }
      } else if (index === 3) {
        map = {
          index: 3,
          levelContain: self.threeLevelContainDom,
          relation: self.options.threeFourRelation,
        }
      } else if (index === 4) {
        map = {
          index: 4,
          levelContain: self.fourLevelContainDom,
          relation: self.options.fourFiveRelation,
        }
      } else if (index === 5) {
        map = {
          index: 5,
          levelContain: self.fiveLevelContainDom,
          relation: self.options.fiveSixRelation,
        }
      } else if (index === 6) {
        map = {
          index: 6,
          levelContain: self.sixLevelContainDom,
          relation: 0,
        }
      }
      return map
    },
    setScorllEvent: function (scrollInstance, index) {
      var self = this
      var mapKey = self.mapKeyByIndex(index)
      scrollInstance.on('scrollStart', function () {
        self.toggleClassList(mapKey.levelContain)
      })
      scrollInstance.on('scroll', function () {
        if (isNaN(this.y)) {
          return
        }
        var pa = Math.abs(this.y / self.baseSize) / self.options.itemHeight
        var plast = 1
        plast = Math.round(pa) + 1
        self.toggleClassList(mapKey.levelContain)
        self.changeClassName(mapKey.levelContain, plast)
      })
      scrollInstance.on('scrollEnd', function () {
        var pa = Math.abs(this.y / self.baseSize) / self.options.itemHeight
        var plast = 1
        var to = 0
        if (Math.ceil(pa) === Math.round(pa)) {
          to = Math.ceil(pa) * self.options.itemHeight * self.baseSize
          plast = Math.ceil(pa) + 1
        } else {
          to = Math.floor(pa) * self.options.itemHeight * self.baseSize
          plast = Math.floor(pa) + 1
        }
        scrollInstance.scrollTo(0, -to, 0)

        self.toggleClassList(mapKey.levelContain)
        var pdom = self.changeClassName(mapKey.levelContain, plast)
        var obj = iosSelectUtil.attrToData(pdom, plast)

        // numFlag = $('.at').eq(1).html().substr(-2, 2)
        if (index == 1) {
          app.$childr
          // showDateDom.attr('data-year', obj.id)
        } else if (index == 2) {
          // showDateDom.attr('data-month', obj.id)
        } else if (index == 3) {
          // showDateDom.attr('data-date', obj.id)
        } else {
          // showDateDom.attr('data-time', obj.id)
        }
        self.setSelectObj(index, obj)
        if (self.level > index) {
          if (
            (mapKey.relation === 1 && iosSelectUtil.isArray(self.data[index])) ||
            iosSelectUtil.isFunction(self.data[index])
          ) {
            self.setLevelData(
              index + 1,
              self.selectOneObj.id,
              self.selectTwoObj.id,
              self.selectThreeObj.id,
              self.selectFourObj.id,
              self.selectFiveObj.id,
              self.selectSixObj.id
            )
          }
        }
      })
      scrollInstance.on('scrollCancel', function () {
        var pa = Math.abs(this.y / self.baseSize) / self.options.itemHeight
        var plast = 1
        var to = 0
        if (Math.ceil(pa) === Math.round(pa)) {
          to = Math.ceil(pa) * self.options.itemHeight * self.baseSize
          plast = Math.ceil(pa) + 1
        } else {
          to = Math.floor(pa) * self.options.itemHeight * self.baseSize
          plast = Math.floor(pa) + 1
        }
        scrollInstance.scrollTo(0, -to, 0)

        self.toggleClassList(mapKey.levelContain)

        var pdom = self.changeClassName(mapKey.levelContain, plast)
        var obj = iosSelectUtil.attrToData(pdom, plast)
        self.setSelectObj(index, obj)

        if (self.level > index) {
          if (
            (mapKey.relation === 1 && iosSelectUtil.isArray(self.data[index])) ||
            iosSelectUtil.isFunction(self.data[index])
          ) {
            self.setLevelData(
              index + 1,
              self.selectOneObj.id,
              self.selectTwoObj.id,
              self.selectThreeObj.id,
              self.selectFourObj.id,
              self.selectFiveObj.id,
              self.selectSixObj.id
            )
          }
        }
      })
    },
    loadingShow: function () {
      this.options.showLoading && (this.iosSelectLoadingBoxDom.style.display = 'block')
    },
    loadingHide: function () {
      this.iosSelectLoadingBoxDom.style.display = 'none'
    },
    mapRenderByIndex: function (index) {
      var self = this
      var map = {
        index: 1,
        relation: 0,
        levelUlContainDom: self.oneLevelUlContainDom,
        scrollInstance: self.scrollOne,
        levelContainDom: self.oneLevelContainDom,
      }
      if (index === 2) {
        map = {
          index: 2,
          relation: self.options.oneTwoRelation,
          levelUlContainDom: self.twoLevelUlContainDom,
          scrollInstance: self.scrollTwo,
          levelContainDom: self.twoLevelContainDom,
        }
      } else if (index === 3) {
        map = {
          index: 3,
          relation: self.options.twoThreeRelation,
          levelUlContainDom: self.threeLevelUlContainDom,
          scrollInstance: self.scrollThree,
          levelContainDom: self.threeLevelContainDom,
        }
      } else if (index === 4) {
        map = {
          index: 4,
          relation: self.options.threeFourRelation,
          levelUlContainDom: self.fourLevelUlContainDom,
          scrollInstance: self.scrollFour,
          levelContainDom: self.fourLevelContainDom,
        }
      } else if (index === 5) {
        map = {
          index: 5,
          relation: self.options.fourFiveRelation,
          levelUlContainDom: self.fiveLevelUlContainDom,
          scrollInstance: self.scrollFive,
          levelContainDom: self.fiveLevelContainDom,
        }
      } else if (index === 6) {
        map = {
          index: 6,
          relation: self.options.fiveSixRelation,
          levelUlContainDom: self.sixLevelUlContainDom,
          scrollInstance: self.scrollSix,
          levelContainDom: self.sixLevelContainDom,
        }
      }
      return map
    },
    getLevelData: function (index, oneLevelId, twoLevelId, threeLevelId, fourLevelId, fiveLevelId) {
      var levelData = []
      var renderMap = this.mapRenderByIndex(index)
      if (index === 1) {
        levelData = this.data[0]
      } else if (renderMap.relation === 1) {
        var pid = arguments[index - 1]
        this.data[index - 1].forEach(function (v, i, o) {
          if (v['parentId'] == pid) {
            levelData.push(v)
          }
        })
      } else {
        levelData = this.data[index - 1]
      }
      return levelData
    },
    setLevelData: function (
      index,
      oneLevelId,
      twoLevelId,
      threeLevelId,
      fourLevelId,
      fiveLevelId,
      sixLevelId
    ) {
      if (iosSelectUtil.isArray(this.data[index - 1])) {
        var levelData = this.getLevelData(index, oneLevelId, twoLevelId, threeLevelId, fourLevelId)
        this.renderLevel(
          index,
          oneLevelId,
          twoLevelId,
          threeLevelId,
          fourLevelId,
          fiveLevelId,
          sixLevelId,
          levelData
        )
      } else if (iosSelectUtil.isFunction(this.data[index - 1])) {
        this.loadingShow()
        this.data[index - 1].apply(
          this,
          [oneLevelId, twoLevelId, threeLevelId, fourLevelId, fiveLevelId]
            .slice(0, index - 1)
            .concat(
              function (levelData) {
                this.loadingHide()
                this.renderLevel(
                  index,
                  oneLevelId,
                  twoLevelId,
                  threeLevelId,
                  fourLevelId,
                  fiveLevelId,
                  sixLevelId,
                  levelData
                )
              }.bind(this)
            )
        )
      } else {
        throw new Error('data format error')
      }
    },
    renderLevel: function (
      index,
      oneLevelId,
      twoLevelId,
      threeLevelId,
      fourLevelId,
      fiveLevelId,
      sixLevelId,
      levelData
    ) {
      var plast = 0
      var curLevelId = arguments[index]

      var hasAtId = levelData.some(function (v, i, o) {
        return v.id == curLevelId
      })
      if (!hasAtId) {
        curLevelId = levelData[0]['id']
      }
      var tmpHtml = ''
      var itemHeightStyle = this.options.itemHeight + this.options.cssUnit
      tmpHtml += this.getWhiteItem()
      levelData.forEach(function (v, i, o) {
        if (v.id == curLevelId) {
          // 日历创建后， v.value 是当前选中值
          // console.log(v.value)
          tmpHtml +=
            '<li style="height: ' +
            itemHeightStyle +
            '; line-height: ' +
            itemHeightStyle +
            ';"' +
            iosSelectUtil.attrToHtml(v) +
            ' class="at">' +
            v.value +
            '</li>'
          plast = i + 1
        } else {
          tmpHtml +=
            '<li style="height: ' +
            itemHeightStyle +
            '; line-height: ' +
            itemHeightStyle +
            ';"' +
            iosSelectUtil.attrToHtml(v) +
            '>' +
            v.value +
            '</li>'
        }
      })
      tmpHtml += this.getWhiteItem()
      var renderMap = this.mapRenderByIndex(index)
      renderMap.levelUlContainDom.innerHTML = tmpHtml
      renderMap.scrollInstance.refresh()
      renderMap.scrollInstance.scrollToElement(':nth-child(' + plast + ')', 0)
      var pdom = this.changeClassName(renderMap.levelContainDom, plast)
      var obj = iosSelectUtil.attrToData(pdom, plast)
      this.setSelectObj(index, obj)

      if (this.level > index) {
        this.setLevelData(
          index + 1,
          this.selectOneObj.id,
          this.selectTwoObj.id,
          this.selectThreeObj.id,
          this.selectFourObj.id,
          this.selectFiveObj.id,
          this.selectSixObj.id
        )
      }
    },
    setSelectObj: function (index, obj) {
      if (index === 1) {
        this.selectOneObj = obj
      } else if (index === 2) {
        this.selectTwoObj = obj
      } else if (index === 3) {
        this.selectThreeObj = obj
      } else if (index === 4) {
        this.selectFourObj = obj
      } else if (index === 5) {
        this.selectFiveObj = obj
      } else if (index === 6) {
        this.selectSixObj = obj
      }
    },
    getWhiteItem: function () {
      var whiteItemHtml = ''
      var itemHeightStyle = this.options.itemHeight + this.options.cssUnit
      var itemLi =
        '<li style="height: ' + itemHeightStyle + '; line-height: ' + itemHeightStyle + '"></li>'
      whiteItemHtml += itemLi
      if (this.options.itemShowCount > 3) {
        whiteItemHtml += itemLi
      }
      if (this.options.itemShowCount > 5) {
        whiteItemHtml += itemLi
      }
      if (this.options.itemShowCount > 7) {
        whiteItemHtml += itemLi
      }
      return whiteItemHtml
    },
    changeClassName: function (levelContainDom, plast) {
      var pdom
      if (this.options.itemShowCount === 3) {
        pdom = levelContainDom.querySelector('li:nth-child(' + (plast + 1) + ')')
        pdom.classList.add('at')
      } else if (this.options.itemShowCount === 5) {
        pdom = levelContainDom.querySelector('li:nth-child(' + (plast + 2) + ')')
        pdom.classList.add('at')
        levelContainDom.querySelector('li:nth-child(' + (plast + 1) + ')').classList.add('side1')
        levelContainDom.querySelector('li:nth-child(' + (plast + 3) + ')').classList.add('side1')
      } else if (this.options.itemShowCount === 7) {
        pdom = levelContainDom.querySelector('li:nth-child(' + (plast + 3) + ')')
        pdom.classList.add('at')
        levelContainDom.querySelector('li:nth-child(' + (plast + 2) + ')').classList.add('side1')
        levelContainDom.querySelector('li:nth-child(' + (plast + 1) + ')').classList.add('side2')
        levelContainDom.querySelector('li:nth-child(' + (plast + 4) + ')').classList.add('side1')
        levelContainDom.querySelector('li:nth-child(' + (plast + 5) + ')').classList.add('side2')
      } else if (this.options.itemShowCount === 9) {
        pdom = levelContainDom.querySelector('li:nth-child(' + (plast + 4) + ')')
        pdom.classList.add('at')
        levelContainDom.querySelector('li:nth-child(' + (plast + 3) + ')').classList.add('side1')
        levelContainDom.querySelector('li:nth-child(' + (plast + 2) + ')').classList.add('side2')
        levelContainDom.querySelector('li:nth-child(' + (plast + 5) + ')').classList.add('side1')
        levelContainDom.querySelector('li:nth-child(' + (plast + 6) + ')').classList.add('side2')
      }
      return pdom
    },
    setBase: function () {
      if (this.options.cssUnit === 'rem') {
        var dltDom = document.documentElement
        var dltStyle = window.getComputedStyle(dltDom, null)
        var dltFontSize = dltStyle.fontSize
        try {
          this.baseSize = /\d+(?:\.\d+)?/.exec(dltFontSize)[0]
        } catch (e) {
          this.baseSize = 1
        }
      } else {
        this.baseSize = 1
      }
    },
    toggleClassList: function (dom) {
      Array.prototype.slice.call(dom.querySelectorAll('li')).forEach(function (v) {
        if (v.classList.contains('at')) {
          v.classList.remove('at')
        } else if (v.classList.contains('side1')) {
          v.classList.remove('side1')
        } else if (v.classList.contains('side2')) {
          v.classList.remove('side2')
        }
      })
    },
  }
  if (typeof module != 'undefined' && module.exports) {
    module.exports = IosSelect
  } else if (typeof define == 'function' && define.amd) {
    define(function () {
      return IosSelect
    })
  } else {
    window.IosSelect = IosSelect
  }
})()
